Grease gun filler



Get. 6, 1936, Q PETERSON 2,056,327

GREASE GUN F ILLER Filed Sept. 24, 1934 05 car 6 arson I Attorn y Patented Oct. 6, 1936 UNITED STATES PATENT OFFICE 1 1 Claim.

This invention relates to improvements in a grease gun filler. Its primary object being to provide means filling a grease gun to prevent the formation of air pockets or bubbles therein.

A further object is to provide a grease gun filler of extreme simplicity of design and construction and therefore, inexpensive to manufacture.

With these and other objects in view that may appear while the description proceeds it will be seen the invention consists in the novel construction and arrangement of parts as hereinafter more specifically set forth, claimed and shown in the accompanying drawing forming part of this specification and in which I Fig. 1 is a sectional elevation through the grease gun filler also showing the cap for the spout.

Fig. 2 is an elevation of my invention showing the same being operated while resting on a table.

Referring more in detail to the drawing in which similar reference characters designate corresponding parts throughout the several views it will be seen the invention comprises a cylinder l0 having a lower end closure ll secured therein. A re-enforcing band l2 may be provided around the lower end of the said cylinder for strengthening purposes. Excentrically positioned in the said closure is an outlet to which is secured a spout I3, having a slight taper thereto and a cap I4 is provided therefor to exclude dust and other foreign matter, said cap is to be of such dimensions and shape to fit the spout snugly without threading or any other fastening means.

An outer cylinder I5 is constructed to slide over the aforementioned cylinder I0 with a snug sliding fit and is provided with a closure I6 in the upper end thereof. A flat circular disc [1 suitably secured on the end of a rod [8 is positioned within the said cylinder l5 and is of such diameter to fit within the cylinder [0 wherein it slides when in working position. The rod I8 is slidably mounted in a guide bearing l9 concentrically supported in the upper closure l6. Said rod and disc forming a plunger by means of which the grease in the lower cylinder is put under pressure and moved thereby.

In operation the upper cylinder and piston are removed from the lower cylinder and the same filled with grease from a container using a stick or wooden spoon or any similar tool. The upper cylinder and plunger are then replaced and the spout cap removed. The cylinder is then placed on the edge of a bench, stool or other convenient support as represented at 20, and the grease gun connected to the spout. The disc is then depressed by means of the rod and the grease thereby forced into the grease gun in a compact form and is compressed therein and all the air pockets or bubbles are forced out and the grease gun is ready for operation without interruption or trouble due to said air pockets.

It is believed that the construction and advantages of the structure shown may be apparent from the foregoing paragraphs taken in conjunction with the accompanying drawing without further detailed description.

While the preferred embodiment of the invention has been disclosed it is understood that minor changes in the details of construction, combination and arrangement of co-operating parts may be resorted to within the scope of what is claimed without departing from the spirit of the invention.

I claim:

A grease gun filler of the character described comprising a main cylinder having an open upper end, a flat closure disk mounted in the lower end of said main cylinder providing a relatively large bearing surface adapted to rest directly upon a supporting surface, said disk having an outlet opening adjacent the marginal edge thereof, a discharge spout depending from said outlet opening, an outer cylinder of approximately one-half the length of the main cylinder adapted to telescopically fit over said main cylinder and capable of longitudinal movement thereon, a closure for the upper end of said outer cylinder, a bearing through the center of said closure, a rod slidably mounted in said bearing and a piston mounted on the lower end of said rod slidable within said main cylinder.

OSCAR PETERSON. 

